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3.
A game of exhibition involving a batter and a pitcher. The pitched object is a can, preferably one filled with a carbonated beverage. The object is to cause the most spectacular destruction of said can via contact with an official A-Rod bat.

Cheaper beverages are a must, such as Sam's Choice, available at Wal-Mart. A case is under $3 and it tastes like moldy ass, so destroying them is imperative.
"Reading sucks ass. Let's go smash cans."
by Artemis Clyde Frog May 04, 2006
 
1.
its simple you see. 2 players are involved, one pitches the can while the others bats and you see how far you can get it. Soda cans are preferred, because upon impact they tend to explode.
I really wanted to smash cans, so I made a few phone calls and it seemed that walmart had the cheapest cans providing me with minutes of enjoyment.
by Adam Chet April 23, 2006
 
2.
Having the ability to sex someone,
Angélica might not like PDA, but when we get in private she will smashcan.
by AMiller123 September 20, 2014